WikiSym people know privacy
I just registered for WikiSym 2008 in Porto as there will also be TikiFest Porto 2008 and I must say that I'm highly satisfied with their concern for privacy. There were not only the usual checkboxes like "I don't want to receive further spam mails", but also "I don't want to be listed in the conference participants" - and this one:
Wow, kudos to WikiSym folks! :)